Boring and milling machine



G. F. KRIESEL.

BORING AND MILLING MACHINE.

APPLICATION FILED MAY1o,1917. 1,369,749. Patented Feb. 22, 1921.

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VEN TO.' GUSTAVE F KHVESEL. SD f@ ATTORNEYS:

IGT lll u i Il lllllIIllll G. F. KRESEL.'

BORING AND lvHLLlNG MACHINE.

APPLICATION FILED lvl/w10. 1911.

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/NVENTOR .1, GUSTAVE E KR/ESEL.

ATTORNEYS.

W/ TNESSES.'

G. I". KRIESEL.

' BORING AND MILLING MACHINE.

APPLICATION FILED MAY 1o, 1917.

Fatemi Feb. 22,1921.

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UNITED STATES PATENT oFFlcE.

GUSTAVE F. KRIESEL, MINNEAPOLIS, MINNESOTA. ASSIGNOR, BY MESNE ASSIGN- MENTS, T ESTHER V. SAFSTROM, 0F MINNEAPOLIS, MINNESOTA.

BORING AND MILLING MACHINE.

Specification of Letters Patent.

Patented Feb. 22, 1921.

Application filed May 10, 1917. Serial No. 167,819.

T o all wlwm t may concern:

Be it known that I, GUsTAvn F. KRIESEL, a citizen of the United States, resident of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful Improvements in Boring andMilling Machines, of which the following is a speciication.

My invention relates to machines adapted forv boring and milling purposes and the object' of the invention is to provide a compact, inexpensive machine of this character which not only may be used for reboring gas engine cylindersand the like or for milling purposes, but is also adapted for cutting gears, key-seats and square shafts.

A lfurther object is to provide a machine having a comparatively wide range of usefulness which will take the place of a lathe for many classes of work and be much. more economical in its first cost and operation.

The invention consists generally in va? rious constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming part of this-specification,

Figure 1 is a side elevation of a boring and milling machine embodying my invention, f

Fig. 2 is a plan v iew of the same,

Fig. 3 is an end view,

Fig. 4 is a'sectional view on the line fl- 4 of Fig. 1,

Fig. 5 is a sectional view on the line 5-5 of Fig. 3,

Fig. 6 is a sectional view on the line 6--6 of-Fig. 1,

Fig. 7 is a sectional view on the line 7-T of Fig. 1,

Fig. 8 is a sectional view on the line 8-8 of Fig. 3, showing the means for fastening the cylinder in place.

In the drawing, 2 represents the base of the machine, having a horizontally projecting bracket 3 at the rear thereof. 4 is a shaft, journaled in bearings 5 on said bracket and extending horizontally over the base of the machine and having at one end a suitable socket 6 to receive a boring or other tool. A flange 7 is formed on said shaft and "a collar 8 is secured thereon between which and said ange I arrange a sleeve 9, said shaft being mounted to revolve independently of the sleeve. A worm wheel 10 is mounted on said shaft and meshes with a worm 11 secured on a shaft 12 that is prorack 18 on the underside which meshes with a gear 19 on the shaft 20 and the shafts 15 and 20 are provided with a variable speed gearing by means of which the operator can feed the tool to the' work at any desired speed. yThis variable speed gearing consists preferably ofafseries of gears 21,- 22 and 23,

lloosely mounted on the shaft 15 and having key-seats 24: therein to, receive a ke'y v25 mounted 'in a stud 26 that is provided with a linger grip 27. The gears are normally loose on the shaft, but may be locked thereon by the adjustment of the key." A gear 28 is mounted on the shaft 2() and provided with gear rings 29 and 30 mounted on the hubof the gear 28. A clutch 31 has a friction surface for engaging the gear 28 against the tension of a spring 32, a finger grip 33 being provided, having threaded engagement at 34 with the shaft 20. The clutch 31`has a key-seat at 35-in said shaft.

By this mechanism power may be transmitted from the shaft 15 through either of the 2() for operating the gear 19 at a variable speed to feed the boring or other tool to the work.

On the vertical end face of the machine I provide a plate 36 secured by suitable means, such as cap screws 37, which are inserted through the end wall of the base into\ the plate. This plate is preferably provided with a circular upper portion with dovetailed slots 38 radiating from a comparatively large orifice 36a in the center thereof. In these slots dove-tailed bars 39 are mounted and adjustably secured therein by bolts 40. These bars have graduations thereon opposite the mark or graduation 41 at the edges of the slots and by adjusting these bars toward and from the center of the plate, the engine cylinder 42 or other article to be bored may be properly centered in the mait should be desired to change the tool o r carrier during the progress of the work.

y ward to project the tool carrier into and chine. The shaft and sleeve fed forthrough the orifice to a point where the tools can engage. the work clamped to the face of the plate. Whenever desired,. the sleeve `may be retracted, withdrawing the tool carrier through the oril'ice t0 a. point in the necessit ofdisturbing the cylinder or other l onthebars 39.\ By this means .a cylinder 'v y w rit-supporting memberv mounted' thereon,-

piece o work which may be secured to the face ofthe plate. In this way I avoid recentering and're-alining of the work in case #The bars 39 areprovided with threaded ockets 39 to receive bolts 39 which pass the a posit d seated on blocks 40'. which rest may'be'elamped securely on the plate 36 and Jillustme'nt of the blocks 39 lmay be centered thereon by theA radial ad# The plate 36 extends downwardly to the lower portion of the base and a bracket 42 i is mounted in guides therein 'and held by a bolt 43 having a thumb nut 44.' A table 45 is mounted in similar guides above said the4 -plate 36 'an .bracket and Supported by similar means .on

lthe bracket Iand table' and provided with a hand grip k4.8` by means of which the table may be raised or lowered with respect to the thereon whenthe bolts are loosened. A carriage fo'rthe work to be milledv orma- `f "back and forth .thereon through 45' chined is mounted on the table 45 and moved v.tion of the shaft 51 and worm 52.

y On the top of the frame of the machine I provide vclamps 53 and 54 wherein a shaft 55 indicated by dotted lines in Fig. 1, having a depending arm 56, is mounted for use when the machine is employed in milling purposes. The plate 36 is rovided with an orifice-57 to receive this s aft, the end of which overhangs the table 45 'and supports the socket in the arm 56 concentric with the shaft 4. A, clamp 58 isprovided foi' gripping the sleeve 9 and holdin it against longitudinal movement and fee ing the shaft 4 when the milling tool is mounted therein.

I claim asmy invention: y i 1. The combination, with a frame, of a plate vertically mounted thereon and having an orifice therein, ineans for supporting a piece of work horizontally against said plate in front o f said ori-tice, a shaft. horizontally` mounted 1n sald frame and having a tool,

throu lnbars 40 having oneend to engagegilt' e on the cylinder 42 and their op- .Y i between said bracket and ,j

table is a bolt'46 having, its ends'tapped into .3.5

the operay porting a feed shaft.

nacen carrier, means for revolving said shaft and means mounted for rapid forward and backward movement in said frame f and havin bearings for said shaft for advancing an rretractingit and said tool carrier through said orifice. l 2. The combination, with a frame, of a Work-supporting member lmounted thereon, a feed shaft operatin through an oriIi/ce in said member, means or revolving and feeding said shaft, and a table mountedfor vertical'and horizontal adjustment with respect to said member. 3. The combination, with a frame, of a work-supporting'member mounted in a versoI` tical plane thereon and havin an orifice 'therein7 a feed shaft operatingt rough saidj a eed shaftoperating'through'an `orifice in in said member, means for revolvingl and feeding said shaft, a table vertically adjustable with respect to said member, and a carriage mounted for adjustmenton said table'. 5. The combination, with a frame, of a y plate mounted tlfeereon and having a central orifice, a toolfcacrying shaft operating through said orifice,iadially moving clamps f for centering the work`\with respect to said orifice, said plate having a hole therein above said orifice, said frame having clamps with bearings therein in alinement with the h'ole in said plate to receive a shaft, and a milling tool supporting arm. x f

6. The combination, with a frame, of'a driving shaft transversely mounted therein and having a driving pulley' at 'one end. `a driven shaft also transversely mounted-.y said frame and having a variable speed'drivfL ing connection with said driving shaft, av4 feed shaft mounted in said frame` transversely of said driving shaft and ving a driving connection therewith for revolving said feed shaft, a driving connection. between said driving shaft and said feed shaft fori feeding it to the work, and means for suppiece of work in the path of said 7. The combination,` with a' frame, lof a stationary plate mounted thereon, radially movable clamps for engagin and securing the work on saidfplate, a s aft operating through said plate for supporting a tool, means for simultaneously revolving and'v feeding said shaft, and a table adjustably supported beneath and adjacent said shaft.

y8. The combination, with a frame,- of a` work-supporting plate mounted thereon, a feed shaft operatinglthrough' said plate,v

mails for revolving and 'feeding said Shangai@ and a table mounted on said plate vertically adjustable thereon toward and from said shaft.

9. The combination, with a frame, of a plate mounted thereon and having an orifice therein, means for centering an engine cylinder with respect to said orifice. a shaft mounted for rotary and longitudinal movement through said orifice, a sleeve encircling said shaft and having means for feeding it lengthwise during its rotary movement, and means for clamping said sleeve to lok it while permitting independent rotary movement of said shaft.

10. The combination, with a frame, of a Work-supporting member mounted therein and provided with an orifice, means for centering the work with respect to said orifice. a shaft provided with a tool carrier, means for revolving said shaft, a sleeve through which said shaft projects, means preventing independent movement of said sleeve on said shaft, and mechanism for feeding said sleeve to advance or retract said shaft and tool carrier through said orifice.

11. The combination, with a frame, ofv a work-supporting member mounted thereon and provided with an orifice, a shaft having a tool carrier mounted to project through said orifice, means for revolving and feeding said shaft, means for supporting the work n said member, and a milling tool support provided above the orifice in said mem er.

12. The combination, with a frame, of a plate vertically mounted thereon, a worksupporting table vertically adjustable on the face of said plate, the upper portion of said plate above said table having an orifice therein for receiving the operating shaft of a milling tool.

,13. The combination, with a frame, of a work-supporting member mounted thereon, a feed shaft operating through said member, means for revolving and feeding said shaft,

a table vertically adjustable with respect to said shaft and orifice, and a milling tool support provided above said orifice.

14. The combination, with a frame, of a plate mounted thereon and having an orifice therein, a tool carrying` shaft operating through said orifice, means for centering the work with respect to said orifice, said plate having a holder therein above said orifice, said frame having bearings in alinement with said holder to receive a shaft and a milling tool supporting arm.

15. The combination, with a frame, of a' work-supporting member mounted thereon and having an orifice therein.l a feed shaft provided with a tool carrier operating through said orifice, said member having means for mounting a piece of work thereon, and a shaft mounted in said frame above said orifice and projecting through l said member parallel with said tool supporting shaft. l

'16. The combination, with a frame, of a work-supporting and having an orifice and a series of radial grooves around said orifice, clamps adjustably mounted in said grooves, the Work being seated against the surface of said member around said orifice and held by said clamps, a feed shaft operating through said orifice and provided withl a tool carrier, means for revolving said shaft, and means having a bearing therein for said shaft for fedigg and retracting it, said orifice being o cient size to allow said tool carrier to projected and retracted therethrough, the

tools being accessible in the rear of said ori- 17. The combination, with a frame, of an upright plate secured thereon and provided with a central orifice, a tool lsupporting shaft horizontall mouited to project through said ori ce, means for revolving said-shaft and means having a longitudinal movement 1nl said frame and a bearing therein for said shaft for feeding and reg tractin it, means provided in the face of said pl vte around said orifice for clamping the work thereon, the 'work being seated against the face of the plate and engaged by said clamping means, the tools carried by said shaft being projected and retracted through said orifice and accessible at the rear of said plate.

18. The combination, with a frame, of a plate mounted thereon and'having an open` ing and a surface against which a piece of work to be bored is clamped encircling 'said opening, a sleeve mounted in said frame, a shaft mounted in said sleeve and having means for supporting a tool to engage the work through said opening, means for feeding said sleeve and shaft, and means vfor revolving said shaft in said sleeve.

19. The combination, with a frame, of a plate having an opening therein and a surface around said opening against which a cylinder to be bored is clamped, a sleeve mounted in said frame for forward and backward movement, a shaft mounted in said sleeve and having a tool support to project through the, opening in said plate,

'means for feeding said sleeve and shaft to member mounted thereonA beso shaft mounted. in said sleeve and means for revolving it therein independently `of its forward feeding movement, said shafthaving means for4 supporting a tool for engag- A f -21. The combination, with a frame,

- mounted in said frame and having a carrier, a sleeve having/bearings therein for' fsaid shaft, means, for feeding said ysleevev v and shaft toward ysaid orifice and withdrawingl the work through the opening in said plate. A

of a work-supporting member mounted thereon and having a comparatively -large orifice therein, work-engaging clamps mounted around saidorifice for clamping the work against the face of said member so that the `work will be accessible through said orifice from the other side of said member,a feed Vshaft operating through said ,orifice and provided with a'tool carrier, means havingl a forward and backward movement in said frame' and a bearing 'for said shaft for feeding said shaft and carrier through said orifice to the work and retracting said shaft and carrier from said member and orifice for convenient access to said carrier on the op-` posite side of lsaid member from the work.

22. The combination, with a frame, vof a drivingshaft mounted therein, a driven shaft mounted in said frame and having la variable speed driving-connection with said driving shaft, a feed shaft mounted in said frame transversely of said driving shaft and having a driving connection therewith for revolving said feed shaft, driving connections between said driving shaft and said feed shaft' for feedingv it to lthe work, andv means for supporting'a piece of ywork in the path of` said feedfshaft.

' 23. The combination,

m front of said orifice, a shaft horizontally i'ng them, a driven shaft mounted transversely of said sleeve and having'a drivingconnectiontherewith, a variable speed gear` ing connectingv said driving shaft with said driven shaft, mechanism for revolving said with -a frame, of-a plate vertically mounted thereon and having. an'orifice therein, means `for supporting a ieceof Work horizontally against said plate work through said opening, and power operated means for simultaneously revolving said shaft in said sleeve; and feedin said sleeve to advance saidshaft and the tool carried thereby to the work.

25. The combination, with a 4frame having an orifice therein and means for supporting apiece of work in front of said orifice, of l a shaft mounted in said frame andhaving a tool carrier, means for revolving said shaft `and carrier and means mounted forforward and backward movement in said frame and having bearings for said shaft for advanc-l ingv and retracting it and said tool carrier through said orifice.

26. The combination, with a frame and means for clamping a piece of work thereon, of a shaft having a tool carrying head,

means for revolving said 'sh'aftto feed. the tools to the work, means having bearings Ifor said shaft and mounted for forward and backward-movement, and means for reciproeating said shaft-supporting means to advance and retract saidshaft.

27. The combination, with a frame and an upright plate mountedthereon and having an vorifice* thereinand a true seating surface around said orifice, and clamps for securing a piece of work tosaid surface, of

a shaft havingva tool-carrying head, means forffeeding said shaft and tools forward through saidzdrifice' to engage the work and "retreating them from the work, and means for' refvllvsing said: shaft kand tools.

In witness vwhereof,"I have'hereunto set 95 I my :hand this 5th 'day `of May, v1917.

rGiisTavn F." ImiEsEL. 

